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TOI-270
TOI-270, also known as L 231-32, is a red dwarf star away in the constellation Pictor. It has about 39% the mass and 38% the radius of the Sun, and a Effective temperature, temperature of about . TOI-270 hosts a system of three known exoplanets. Planetary system The three planets of TOI-270 were discovered in 2019 by the transit method with Transiting Exoplanet Survey Satellite, TESS. Their masses have since been measured by both Doppler spectroscopy and transit-timing variations. The innermost planet, TOI-270 b, is a rocky super-Earth, while the two outer planets are mini-Neptunes. TOI-270 b and c orbit near a 5:3 orbital resonance, resonance, while TOI-270 c and d orbit near a 2:1 resonance. Observations of the outermost planet, TOI-270 d, by the Hubble Space Telescope suggest a hydrogen-rich atmosphere with signs of water vapor. TOI-270 c & d are good targets for atmospheric detection with the James Webb Space Telescope. The James Webb Space Telescope detected methane ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Disulfide
Carbon disulfide (also spelled as carbon disulphide) is an inorganic compound with the chemical formula and structure . It is also considered as the anhydride of thiocarbonic acid. It is a colorless, flammable, neurotoxic liquid that is used as a building block in organic synthesis. Pure carbon disulfide has a pleasant, ether- or chloroform-like odor, but commercial samples are usually yellowish and are typically contaminated with foul-smelling impurities.. History In 1796, the German chemist Wilhelm August Lampadius (1772–1842) first prepared carbon disulfide by heating pyrite with moist charcoal. He called it "liquid sulfur" (''flüssig Schwefel''). The composition of carbon disulfide was finally determined in 1813 by the team of the Swedish chemist Jöns Jacob Berzelius (1779–1848) and the Swiss-British chemist Alexander Marcet (1770–1822). Their analysis was consistent with an empirical formula of CS2. Occurrence, manufacture, properties Small amounts of carbon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
